@@ -100,6 +100,7 @@ function renderStaticWorkbench(): string {
       enableTelemetry: false,
       nameShort: "ModelScript",
       nameLong: "ModelScript IDE",
+      extensionAllowedProposedApi: ["modelscript.modelscript"],
     },
   };
 
 
@@ -66,6 +66,7 @@ function renderWorkbench(protocol: string, host: string, folderConfig: Record<st
       nameLong: "ModelScript IDE",
       webEndpointUrlTemplate: `${protocol}://{{uuid}}.${host}/vscode-static`,
       webviewContentExternalBaseUrlTemplate: `${protocol}://{{uuid}}.${host}/vscode-static/out/vs/workbench/contrib/webview/browser/pre/`,
+      extensionAllowedProposedApi: ["modelscript.modelscript"],
     },
   };
 
 
@@ -356,5 +356,13 @@
   "galleryBanner": {
     "color": "#0d1b2a",
     "theme": "dark"
-  }
+  },
+  "enabledApiProposals": [
+    "chatParticipantAdditions",
+    "chatParticipantPrivate",
+    "chatProvider",
+    "defaultChatParticipant",
+    "languageModelSystem",
+    "contribLanguageModelToolSets"
+  ]
 }